public FunctionPlot PlotFunction(
Func <double, double?> function,
Color?color = null,
double lineWidth = 1,
double markerSize = 0,
string label = "f(x)",
MarkerShape markerShape = MarkerShape.none,
LineStyle lineStyle = LineStyle.Solid
)
{
if (markerShape != MarkerShape.none || markerSize != 0)
{
throw new ArgumentException("function plots do not use markers");
}
FunctionPlot functionPlot = new FunctionPlot(function)
{
Color = color ?? settings.GetNextColor(),
LineWidth = lineWidth,
LineStyle = lineStyle,
Label = label
};
Add(functionPlot);
return(functionPlot);
}
public void Test_function_LineStyle()
{
var plt = new ScottPlot.Plot();
// start with default settings
double?func(double x) => Math.Sqrt(x);
var funcPlot = new FunctionPlot(func)
{
};
plt.SetAxisLimits(-1, 1, -.5, 1.5);
plt.Add(funcPlot);
var bmp1 = TestTools.GetLowQualityBitmap(plt);
// change the plottable
funcPlot.lineStyle = LineStyle.Dash;
var bmp2 = TestTools.GetLowQualityBitmap(plt);
// measure what changed
//TestTools.SaveFig(bmp1, "1");
//TestTools.SaveFig(bmp2, "2");
var before = new MeanPixel(bmp1);
var after = new MeanPixel(bmp2);
Console.WriteLine($"Before: {before}");
Console.WriteLine($"After: {after}");
Assert.That(after.IsLighterThan(before));
}
/// <summary>
/// Add a line plot that uses a function (rather than X/Y points) to place the curve
/// </summary>
public FunctionPlot AddFunction(Func <double, double?> function, Color?color = null, double lineWidth = 1, LineStyle lineStyle = LineStyle.Solid)
{
FunctionPlot plottable = new FunctionPlot(function)
{
Color = color ?? settings.GetNextColor(),
LineWidth = lineWidth,
LineStyle = lineStyle
};
Add(plottable);
return(plottable);
}
